MinMaxLines: Transform the simulation object to include only the min and... In simPH: Tools for Simulating and Plotting Quantities of Interest Estimated from Cox Proportional Hazards Models

Description

`MinMaxLines` is an internal function to transform the simulation object to include only the min and max of the intervals set by `ci` in the `coxsim` command, as well as the lower and upper bounds of the middle 50 percent of these intervals. It also returns the medians.

Usage

 ```1 2``` ```MinMaxLines(df, byVars = "Xj", hr = FALSE, strata = FALSE, clean = FALSE) ```

Arguments

 `df` a data frame or a simulation class object. `byVars` character vector of the variables to subset the data frame by. The default is `'Xj'`. `hr` logical indicating whether or not `df` contains a hazard rate. `strata` logical indicating whether or not `df` contains a stratified hazard rate. `clean` logical, whether or not to clean up the output data frame to only include `byVars`, `Min_CI`, `Lower50_CI`, `median`, `Upper50_CI`, `Max_CI`.

Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22``` ```# Load Carpenter (2002) data data("CarpenterFdaData") # Load survival package library(survival) # Run basic model M1 <- coxph(Surv(acttime, censor) ~ prevgenx + lethal + deathrt1 + acutediz + hosp01 + hhosleng + mandiz01 + femdiz01 + peddiz01 + orphdum + vandavg3 + wpnoavg3 + condavg3 + orderent + stafcder, data = CarpenterFdaData) # Simulate Hazard Ratios Sim1 <- coxsimLinear(M1, b = "stafcder", Xj = c(1237, 1600), Xl = c(1000, 1000), qi = "Hazard Ratio", spin = TRUE, ci = 0.99) # Find summary statistics of the constricted interval Sum <- MinMaxLines(Sim1, clean = TRUE) ```

simPH documentation built on May 29, 2017, 10:38 a.m.